180 TLIOCKNE MOLLUSCA. 



therefore, if only for convenience of classification, to keep the strongly scnlptnred 

 shells separate.^ 



The specimen figured by Nyst in 1843 (op. cit.) as Piisus corneus, Linne, is, I 

 consider, the Crag form here described as S. curtns. That given by Pennant as 

 Murex corneus is 8. gracilis. Messrs. Dantzenberg and Fischer state (op. cit., p. 85) 

 that Linne's Murex corneus is a different species. 



Sipho togatus (Morch). Plate XXII, figs. 1, 2. 



1869. Fusus (Sijiihonorhis) toijatvs, Morch, Journ. de Coudi., vol. xvii, p. 398. 



1879. Trophon tortuosus, S. V. Wood, Mon. Crag Moll., 2nd Suppl., p. 7, tab. ii, fig. 2 a. 



1881. Fusus togatus, Kobelt, Martini nud Clieinuitz, Condi. Cab., ed. 2, pt. iii (Piirpuracese), pi. 



xxxvii, fig. 7 ; pi. xl, figs. 4, 5. 

 1882-1901. Neptunea {Sipho) curta, var., Friele, Norske Nordh. Exped. (Molliisca), pt. i, p. 14, 1882; 



pt. iii, p. 104, 1901. 

 1899. Sipho togatus, Posselt, Medd. om Gronl., vol. xxiii, p. 184. 

 1912. Hipho togatus, Dantzenberg et Fischer, Camp. Scient. Pr. Monaco, vol. xxxvii (Mollusques), 



p. 91, pi. iii, tigs. 12, 13. 



Specific Characters. — Shell fusiform, not very solid; whorls decidedly convex, 

 the last two-thirds the total length ; ornamented by strong and prominent spiral 

 ribs, which extend to the base of the shell, equal to the spaces betw^een them, and by 

 exceedingly fine lines of growth ; suture deep ; mouth oval, angulated above, ending 

 in a well-marked canal which turns slightly to the left ; outer lip thin, regularly 

 ciirved ; inner lip forming a glaze on the pillar ; pillar excavated above. 



Dimensions. — (Of Crag specimen.) L. 50 mm. B. 23 mm. 



Distribution. — Recent : circumpolar : Spitzbergen, Baffin's Bay, west Green- 

 land, north-west Atlantic. 



Fossil ; Waltonian Crag : A¥alton-on-Xaze. Newbournian : 

 Waldringfield. Butleyan : Oak Hill, Sutton, Butley. 



Pleistocene deposits {Yoldia-clay) of the Christiania region (0yen), and of 

 Sweden (Morch). 



Bemarls. — When examining the Reed Collection in the York Museum I noticed 

 a specimen, one of those here figured, labelled Fusus sp., Waldringfield, which 

 differed materially from anything that I had before noticed from the Crag; I 

 subsequently found another in the Jermyn Street Museum, and a third of 



' I ninch regret to differ from the nomenclature adopted by Mr. Friele, from whom I have received 

 the most generous assistance, but I cannot help doubting whether the shells figured by him truly 

 represent the special forms for which Jeffreys proposed the term F. curtus. That name must have 

 been founded on fossils everywhere and abundantly present in tlie Red Crag, rather than on those 

 which are so rare that many students of these deposits are unaware of their existence. 



